بيت /how are ores processed to obtain metals
Extracting copper from other ores. Copper can be extracted from nonsulphide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulphuric acid to produce a very dilute copper(II) sulphate solution.
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when ores of aluminium, copper and iron are mined using open cast mining huge pits that scar the landscape are made, creating noise and dust and destroying the habitats of animals and plants+leave waste rock. water can be affected as rain drains through exposed ores and slag heaps of waste, ground water can become acidic. ores must be processed to extract metals, eg, sulphide ores are heated .
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Question: If A Particular Ore Contains % Calcium Phosphate, What Minimum Mass Of The Ore Must Be Processed To Obtain Kg Of Phosphorus? This problem has been solved! See the answer. If a particular ore contains % calcium phosphate, what minimum mass of the ore must be processed to obtain k g of phosphorus?
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The Mining sector covers the extraction and processing of metal and mineral ores and deposits, including coal, copper, iron, limestone, nickel, precious metals, potash, uranium, diamonds, minerals, rare earth elements and much more. The Mining Platform identifies mine type (aboveground, underground and solution) and mining method.
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Metals in the middle of the activity series like Zn, Fe, Pb, are found as oxide, sulphide or carbonate ores. It is easier to obtain metals from their oxides than from their sulphides or carbonates. So non oxide ores are converted into oxide form before reduction. Non oxide ores can be converted into oxide form by roasting or calcination.
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Mar 03, 2009· Extraction of metals Only some unreactive metals such as silver, gold and platinum can occur freely in nature. Most metals react with other elements to form o. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
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Extraction of Metals. Industries extract metals from their ores. What are ores? Let me explain in a simple way. Usually, less reactive metals such as gold and silver are found in their pure form in the soil. But this is not the case with more reactive iron or aluminum. Usually iron and aluminum exist as compounds, with oxygen, also known as oxides.
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Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a relatively dense metal with a silvery white appearance and distinctive
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Sometimes huge amounts of ore are needed to make a small amount of metal – most copper, for example, exists in sulphide ores that contain as little as % copper. The metal then has to be extracted from the rock using furnaces and electrolytic processes. Finally, before the metal can be used, it often has to undergo further processing.
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Aluminum processing, preparation of the ore for use in various products. In addition to its low density, many of the applications of aluminum and its alloys are based on its high electrical and thermal conductivity, high reflectivity, and resistance to corrosion.
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In addition to the ores themselves, several other materials are often used to process and refine tin. These include limestone, silica, and salt. Carbon, in the form of coal or fuel oil, is also used. The presence of high concentrations of certain chemicals in the ore may require the use of other materials.
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Our own assumption is that the processes related to extraction, crushing, and grinding are modified not just with regard to energy use, but also in their overall use of resources and emissions per kg of produced metal, since in fact larger amounts of ore must be processed to obtain this 1 kg.
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The production of metals therefore involves the reduction of those metal ions to form the neutral metal. Different processes are used for this, including decomposition upon heating, reacting with a reducing agent such as carbon, and, for the most difficult to reduce metal ions, electrolytic reduction.
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Mining and Processing Metal Ores. Based on the composition of the deposit, the price of extracting the metal changes, so the value of extracting the metal must be weighed against the cost. Commercial mining operations use mechanical separation and combinations of chemical magnetic and electrical treatments to obtain the desired metal from the ore.
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Jun 17, 2016· A clean way to extract rare earth metals. Because these elements are so similar to each other, the process of separating them is time consuming, expensive, and dangerous. Processing one ton of rare earths can produce 2,000 tons of toxic waste.
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Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper. The ores typically contain low percentages of copper and have to be concentrated before refining (, via froth flotation). Figure 1: Chalcopyrite extracted from Zacatecas, Mexico. Image used with permission from Rob Lavinsky () under a license.
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